Question

For an isosceles prism of angle A and refractive index ????, it is found that the angle of minimum deviation
δm = A. Which of the following options is/are correct?
[A] At minimum deviation, the incident angle i₁ and the refracting angle r₁ at the first refracting surface are
related by r₁ = (i₁/2).
[B] For this prism the refractive index ???? and the angle of prism A are related as A = 1/2 cos⁻¹ (????/2).
[C] For this prism, the emergent ray at the second surface will be tangential to the surface when the angle
of incidence at the first surface is i₁= sin⁻¹ [ sin A ⎷(4cos² A/2-1 - cos A)].
[D] For the angle of incidence i₁ = A, the ray inside the prism is parallel to the base of the prism.

Answer 1

Answer:

sorry ........................

Answer 2

Answer:

Explagiven in the pics and is ACD